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7:12
Khan Academy
Sal Khan,Monterey Institute for Technology and Education
Approximating square roots to hundredths
Let's approximate the square root of 45 without a calculator. We'll explore how to find the perfect squares around 45 and use them to make an educated guess. Then, we'll refine our guess by squaring it to see how close we get to 45.
Jun 22, 2011
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